TY - JOUR A1 - Dubberke, Frithjof H. A1 - Linnemann, Matthias A1 - Abbas, Wameedh Khider A1 - Baumhögger, Elmar A1 - Priebe, Klaus-Peter A1 - Roedder, Maximilian A1 - Neef, Matthias A1 - Vrabec, Jadran T1 - Experimental setup of a cascaded two-stage organic Rankine cycle JF - Applied Thermal Engineering N2 - In combination with a bottoming cycle, operated with a pure fluid in transcritical mode, the usage of a zeotropic mixture as a working fluid appears to be exergetically favorable for power cycle efficiency in cascaded two-stage organic Rankine cycles (CORC). A CORC is set up and initially tested with cyclopentane and propane as working fluids in its high temperature and low temperature cycle, respectively. A thermal oil cycle serves as the heat source and is powered electrically with a maximum heat flow of 158 kW. The design of this experimental setup allows for a rapid replacement of individual components and for a wide range of conditions in terms of fluids and thermodynamic states. The components of all cycles and the measurement and control technology are described in detail. A testing procedure is presented, followed by a discussion of the measurement results, where it is shown that the intended concept of two cascaded organic Rankine cycles is operational and that the measured data are consistent. KW - organic Rankine cycle KW - cascade KW - multicomponent working fluid KW - temperature-glide KW - pinch point KW - exergetice efficiency Y1 - 2018 U6 - https://doi.org/10.1016/j.applthermaleng.2017.11.137 VL - 131 SP - 958 EP - 964 PB - Elsevier ER -